Hood for grinding and polishing wheels.



No. 787,340. PATENTED APR. 11, 1905. H. N. MIDDLETON.

HOOD FOR GRINDING AND POLISHING WHEELS.

APPLIGATION FILED DBO.14. 1903.

Patented April 11, 1905.

UNTTED STATES PATENT @EEicE.

HARRY MIDDLE ON, OF \VFSTYlLLlG, NEW JERSEY, ASSlt-iriOR OF ONE-HALF TOCHAR-LES ll. (ilFFORl), ()F llllLADELPl'llA, PENN- SYLVANIA.

HOOD FOR GRINDING AND POLISHING WHEELS.

SPECIFICATION forming part of Letters Patent No. 787,340, dated April11, 1905.

Application filed December 14,1903. Serial No. 185,133.

l l l Be it known that l, HARRY N.Mii)i' i.t1'roN, a citizen ol' thel'nited States, and a resident ol' est ville, Gloucester county, NewJersey,

have invented certain improvements in lloods t'or Grinding and Polishing\Yheels, of which the t'ollowing is a spiwitication.

.\ly invention relates to certain iinprovewheel from its shal't.

hinged to the plate l) [or the same purpose.

ments in hoods for grinding and polishing wheels which are connected toexhaust-tans. The ob ect of my invention is to prevent the passage olheavy particles from the hood to the exhaustd'an, which are ordinarilyinjui'ious to the tan. This object 1 attain by providing a collector inthe hood which re- 1 is a perspective view of my improved hood, '1

illustrating one form of the invention. Fig. 2 is a side view, and Fig.3 is an end view.

is a hood having a curved portion (1 which [its over the grinding orpolishing wheel. (Shown by dotted line 1', Fig. 1.) This curved portionconnects with the body of the hood.

Below the grinding-wheel in the present instance is a chamber orreceptacle B, having a removable cap B, which is connected to the bodyby a bayonet-joint 7); but other means of tastening the cap to the bodyportion may be resorted to without departing from my invention.

A is the outlet t'roin the hood, which is connected to a suction orexhaust t'an ol any The l l.) is a slide l), which can form an extensionot' the plate when desired. The object ol hinging the plate I) is to al-The side member (1 ot the body portion is attached to the body by a hooke or any other suitable l'astening.

()n the outer end of the curved portion ot the hood is a bracket towhich is pivoted a shield F, which can be adjusted toward or from thesurface ol the wheel to catch any particles that lly from the wheel, sothat they will be sure to be conveyed into the hood. The shield is heldin its adjusted position by a set-screwj".

Vhile .l have shown the hood in the particular l'orin illustrated inFig. l and the suction-pipe arranged at an angle, it will be understoodthat the receptacle for the solid matter may be of any shape desired,and the suction-pipe can be arranged atany angle.

It will be seen that my invention can be readily applied to any grindingor polishing machine to catch the particles of solid matter passing fromthe wheel. The particles tail to the bottom of the receptacle and arethere collected, the suction not being stillicient to remove theparticles which enter the receptacle. Consequently they will accuinulate therein and can be removed at intervals by detaching the cap B.

I claim as my invention 1. A hood l or grinding and polishing wheels,having a curved portion partly surrounding the wheel, a receptacle atthe lower end of the hood, a detachable cap tor the said receptacle, andan exhaust-pipe coupled to the hood at a point between the wheel and thereceptacle, substantially as described.

2. The combination in a hood for grinding and polishing wheels, having acurved portion inclosiiig the wheel, a tapered body portion terminatingin a receptacle, and an exhaust-pipe coupled to the body portion, with adetachable bottom for the receptacle, substantially as described.

3. The combination in an exhaust-hood for grinding and polishing Wheels,of a casing having a receptacle formed therein, one side of the casingabove the receptacle being hinged, a plate pivoted to the front of thebody portion, and an exhaust-pipe connected to the casing above thereceptacle, substantially as described.

4. The combination in an exhaust-hood for grinding and polishing Wheels,of a body

